Space History for September 10

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1222Halley's Comet passed perihelion, as determined from records by Chinese astronomers in its twentieth known passage.

In 2000 years of observations since 240 BCE, Chinese records have never missed a return of Halley's Comet. From those records, Cowell and Crommelin computed the dates of perihelion passage as:

Note that the precision of the dates from passage 21 onward could be computed with increased accuracy because of additional observations. However, at the time of their computation, the 1986 passage was still a future event. (The actual date was found from other sources.)

On 19 April 607, Comet 1P/607 H1 (Halley) approached within 0.0898 AUs (13.4 million km, 8.35 million miles) of Earth.

On 16 October 1982, astronomers David Jewitt and G. Edward Danielson using a CCD camera with the 5.1 m Hale telescope at Mt. Palomar Observatory were the first to detect Halley's Comet on its thirtieth recorded return.

1857Born, James E. Keeler, US astronomer (studied Saturn's rings, first to observe the gap in Saturn's rings now known as the Encke Gap), founded and edited the Astrophysical Journal with George Haleref:en.wikipedia.org

1962A fire caused serious damage in the pure-oxygen atmosphere of a simulated Air Force space cabin.

Fire broke out in a simulated space cabin at the Air Force School of Aerospace Medicine, Brooks Air Force Base, Texas, on 10 September 1962, the 13th day of a 14 day experiment to determine the effects of breathing pure oxygen in a long duration space flight. One of the two Air Force officers was seriously injured. The cause of the fire was not immediately determined. The experiment was part of a NASA program to validate the use of a 5 psia pure oxygen atmosphere for the Gemini and Apollo spacecraft.ref:www.hq.nasa.gov

Of nearly 12 days in orbit, STS 106 spent seven docked with the International Space Station, preparing the ISS for the arrival of the first residents in its permanent habitation, the Expedition One crew. Atlantis docked with the PMA-2 adapter on the International Space Station at 05:51 GMT on 10 September.

The STS 106 crew spent five days, 9 hours and 21 minutes inside the International Space Station. The seven crewmembers completed a long checklist aimed at making the station a home for its first residents, who would arrive about five weeks later to stay for more than four months. Acting as plumbers, movers, installers and electricians, the astronauts installed batteries, power converters, a toilet and a treadmill on the orbiting outpost. They also delivered more than 2,993 kilograms (6,600 pounds) of supplies.

Astronauts Lu and Malenchenko performed a spacewalk beginning at 04:47 GMT on 11 September. They rode the RMS arm up to the newly arrived Zvezda Service Module and began installing power, data and communications cables, reaching a distance of 30 meters from the airlock when installing Zvezda's magnetometer. The total EVA duration was 6 hours 21 minutes.

Atlantis' thrusters were fired four times to boost the station's altitude by 22.5 kilometers (14 miles).

The Shuttle undocked from ISS at 03:44 GMT on 18 September. After undocking, Pilot Scott Altman moved Atlantis to a distance of about 137 meters (450 feet) from the station, and made two circuits of the station, each lasting half an orbit, as the rest of the crew photographed its exterior for documentation. The final separation maneuver was executed at 05:34 GMT.